As cancer treatments are developed, cancer survivors are increasing very rapidly. It is assumed that there are now more than 1,000,000 cancer survivors in Korea. Cancer survivor was historically defined as someone who had remained disease-free for 5 years, but the definition has been changed to a person who had experienced cancer from diagnosis. This transition reflects the necessity for long-term care planning as life years beyond cancer diagnosis gets longer. Cancer survivors are newly-appeared patient population who need comprehensive care. They are vulnerable to second-primary cancers, have to be educated for healthy behaviors, and have many comorbidities and psychosocial problems. For the comprehensive approach to cancer survivorship, ‘Shared care model’ has been suggested, and it has been applied to some hospitals in Korea. In this model, oncologists and primary-care physicians care cancer survivors together since cancer diagnosis. During active cancer treatment, the oncologist takes main role for care but the primary-care physician maintains the routine health care. And after active cancer treatment, primary-care physician assumes more responsibility for survivorship care. The oncologist and the primary-care physician have regular communication for effective care. Based on this model, the cancer survivorship is expected to be improved.